Tie drill



March- 4, 1958Y H. H. TALBoYs 2,825,372

TIE DRILL Filed March 30, 1954 y l0 Sheets-Sheet 1 L f5 k March 4, 1958 H. H. TALBoYs TIE DRILL.

10 Sheets-Sheet 2 Filed March 30, 1954 INU March 4, 1958 H. H. TALBYS4 TIE DRILL 10 Sheecs--Sheei'l 3 Filed March 30, 1954 March 4, 1958 H. H. TALBoYs 2,825,357?v TIE DRILL Y v Filed March 30, 1954 10 Sheets-Sheet 4 Illu- March 4, 1958 H. H. TALBoYs TIE DRILL 10 Sheets-Sheet 5 Filed March 50, 1954 f im m f March 4, 1958 H. H. TALBoYs TIE DRILL Filed March 30, 1954 10 Sheets-Sheet 6 March 4, 1958 H. H. TALBoYs j TIE DRILL 10 Sheets-Sheet '7 Filed March 30, 1954 .farifeys r March 4, 1958 H. H. TALBoYs TIE DRILL 10 Sheets-Sheet 8 Filed March 50', 1954 March 4, 1958 H. H. TALBoYs TIE DRILL 10 Sheets-Sheet 9 Filed March 50, 1954 wry/23,25%?

March' 4, 1958 H. H. TALBoYs 2,825,372

TIE DRILL l0 Sheets-Sheet 10 Filed March 30, 1954 Z4 ccoooooi United i States Patent O Tin DRILL Henry H. Talboys, Milwaukee, Wis., assignor to Nordberg Manufacturing Company, Milwaukee, Wis., a corpora- -tion of Wisconsin Application March 30, 1954, Serial No. 419,803

9 Claims. (Cl. 144-92) This invention is directed to a new and improved method 'and 'apparatus for drilling spike holes in the supporting ties for the rails of a track.

One purpose of the present invention is to simplify and facilitate the drilling of spike holes in the supporting ties of a track, thus enhancing the rail laying operation.

Another purpose ofthe present invention is the provision of an improved tie drilling apparatus wherein means are provided for insuring that the spikeV holes drilled into the ties are perpendicular to the plane of the ties or the plane of the rails, thus avoiding any crowding or camming of the rail out of its gauged position when spikes are subsequently driven into the holes in the ties.

vAnother purpose of the present invention -is the provision of an improved apparatus and system for aligning a plurality of drilled spike holes laterally of the rail by relating the position of the vdrills to the gauge side of said rail.

Another purpose is to provide a tie drill adjustable or adapted to iit the drill bits into the spike holes in a tie plate.

Another purpose is to provide improved means for controlling or setting the depth to which holes will be drilled in the supporting ties.

Another purpose is to provide a tie drill in which with a plurality of drills, the operator need sight and spot only one drill longitudinally of the track, the other drill or ydrills being thereby spotted automatically in longitudinal and lateral relation to the tie plates for which holes are drilled.

Another purpose is to provide improved set-ott means for tie drills and similar trackworking machines.

lAnother purpose is to provide improved driving means for tie drills.

Another purpose of the present invention is to provide a supporting mechanism for a plurality of tie drill bits which allows both axial adjustment of the drills with relation to a point on the track and both individual and collective lateral adjustment of the drills with respect to said point on the track.

.Another object is to provide improved driving means for positioning a plurality of tie drills along the rails of atrack to thereby facilitate longitudinal positioning of the tie drills with relation to a track rail.

Another object is to provide improved means for assembling a tie drill bit and drill chuck to thereby facilitate a quick replacement of drilled bits.

Other purposes will appear from time to time in the course of the ensuing specication and claims.

The invention is illustrated more or less diagrammatically in the attached drawings wherein:

Figure 1 is a perspective view of the improved drilling machine of the present invention;

Figure 2 is a side elevational View looking transversely of the track railsr supporting the machine shown in Figure l;

p 2,825,372 Patented Mar. 4, 1958 ice Figure 3 is an end elevational View looking longitudinally of the supporting rails of the machine shown m Figure l;

Figure 4 is asectional View of the machine shown in` Figure 3 looking along'the section lines 4-4 of Figure 3; Figure 5 is a detail view of the supporting means for the machine shown in Figure 3, certain portions of the machine being shown in section for purposes of clarity;

Figure 6 is a detail view of a portion of the drilling assembly shown in Figures l, 2 and 3;

Figure 7 is a detail view of a portion of the driving means for the drilling assembly;

Figure Sis a detail view in section of the drilling assembly shown in Figure 6, taken along the section .line 8-3 of Figure 6;

Figure 9 is al detail view, with certain portions shown in section for purposes of clarity, of a portion of the transmission for the drilling assembly;

Figure l0 is a detail view of another portion of the transmission for the drilling assembly; Y

Figure 1l is a sectional view of the portion of the transmission taken along the line 11-11 of Figure 10;

Figure l2 is a detail view of a mechanism for controlling the height of the drilling assembly taken along the section lines 12-12 of Figure 6;

Figure 13 is a plan view of atypical tie'plate, tie and rail assembly;

Figure 14 is a plan view of the tool box shown in Figure 1 and Figure 3;

Figure 15 is a sectional view of the device shown in Figure 14 taken along the section line 15-15 of Figure 14; and

Figure 16 is a sectional view of the device shown in Figure l5 looking along the section lines 16-16 of Figure l5.

Referring specically now to the drawings wherein like elements are designated by like characters throughout and in the first instance to Figure l, 1 and 2 represent the two rails of a railroad track. The rail 2 is shown as a normally txed rail, whereas the rail 1 is seated upon tie plates 3 which, in turn, are supported on the usual ties 4. YThe tie plates 3 have the customary holes 5 formed therein for the reception of therail spikes.

According to my method, the tie plates 3 are positioned to the proper gauge by any suitable gauging device. They may be initially secured in their gauged position by means of small wooden pegs or the like driven into the ties through the tie plates. After the tie plates have been properly positioned, the rail 1 is positioned in the rail seats of the tie plates. A tie drilling machine, indicated diagrammatically at A, is supported for the most part upon the rail 1. The tie drilling machine includes a'pair of spaced drills represented diagrammatically at B. The drilling assembly preferably includes a pair of spaced tie drills adapted to straddle the rail 1 which is positioned at theA propergauge from rail 2. In my method of drilling the spike holes, I pre-select the desired lateral position of the drilling assemblywith relation to the-rail 1. Any adjustments necessary for the correct positioning of the tie drills are made in the machine prior to the drilling operation. The tie drills are initially spaced and adjusted so as to conformv to `the spacing of the spike receiving holes inthe tie plates 3, as will be seenin Figure 13. The drilling assembly is also adjusted to insure reciprocation of the drilling assembly in a direction normal to the plane of the tiesprior to the actual drilling operation. After the drills are placed in their selected lateral position andtheir necessary normal position, the machine is moved along the rails. The machine is stopped at each tie for successive drilling operations. The operator-of the machine sights along the-rail 1 and spots one ofthe drills in its correct'longitudinal position over one ofthe 1 Y holes inthe tieplates;`

V aligdmoreljthan one drill longitudinally'offthe. rail L1.

ator may grasp the: handle 19 and tilt the machine u`p Y. 'wardl'y ,generallyY about the axis' of thev wheelsJ 24 and 25 and roll the machine'to` any desired location.V kWhernit is desired to re-position the Ymachine over the ytrack'rals; Q the operator simply moves the machine overtthe traclrfi` l rails where the roller 15 Vand roller assemblies 8tare=disfl y Yposed above the track railslV and 2 and themachinefisi j Y allowed to settle on thejrails/ The lockingelem'ents 2831 l and 29 arerthen disengaged? and Vthe wheels'24 and 25 are swung to their-.upperinoperative -positiromshownfinligff i ures1,2,3and5.

A supporting'roller assembly 8=is provided for^the ,Y machine' at longitudinally spaced points'ontthe machine;` j as shown most clearly inrFigure 4. yEach assembly ini AfterY spotting or aligning one of thefdrills inA the proper Vlongitudinal position, the Ydrilling Y assembly is reciprocated toY drill the spikeholes. YDue to my method, itis unnecessarytospot the lateral position Qf the 4drilling assembly jand it AVis; unnecessary to spot or 5 This methodfis' faster than previous methods, '-requines` Y less operatorfskill'and insuresgreater uniformity and' ac- Yc'urac'y-i'nethe position of'thegspikeholes. Y Y Y y Y Qtlhenfeatures YofV ythe method` will becomeimanifest f from theV dcscriptionof the machine which follows.

' shown in Figure -1, a'frame, including `generally"Y horizontal and longitudinally-extending members 6 and generally upright frame members7,;is supportedrbyroller Y `ralityofmembers 11 serving toY support va prime mover' 12,'which, in this'instance, isrshown as `an internalcom-- -ingfthe surface 45 thereof `adaptedjeor contact'with die` Y opposite side 46 of the head'offtherail 1.' EachrollerQfi v Y assemblies Seatthe frontyand rear of the machineand in l5 Vdudes a generally fr'uStQ-eon ically shaped first; roller 38V Y (Y i supportingge'ngagement with theA rail 1. The frame serves Y having the conic surface 39 thereofjengageable normallyr` to'-;suppprt a -drilling assembly indicated gmerally'at Y9'.l with one upper corner40 of the rail 1. Eacrh'roller 38 i n'The frame ficludes` transverselyextendingY members 10, is mounted'for rotation about `a generallyxedshaftftl j f Whifrh eXeIld tWafdVf-he :DOrmauYXm rail v2l"V FiXed Ysupported by brackets 42, in turn carried by aframememtothemembers Y10 and upstanding-therefrom are .a pili- 20 Vber.43. Each assembly Vincludes a second rollerz44 hav- 1 is mounted Vfor rotation about a-jorrnalv-r47 carriedbyav depending member 48.1 YThe member y48 'Yisfpivotallyf i j mounted upon theframe member 43, as b'y. means 'oflan v' vbastion engi-ne. 'A stabilizingY bar-13 is piv'otedzinte'rf Y fmediate its ends'to VVthe'frame mem'bers'rl as at 14 andi' *Y Y Therear roller 38 has a sproclget 541iixe`d torthev'outeir Y Y*face thereof.' YA chain 55 is engaged ',with the sprocket; Y Y V54 andpasses upwardly'torarsprocket 56 `mounted?for rotation'with ashaft'57 supported.byany.fsuitablefbearT ings' 58 and 59 on the upperportion of the.V 'fra'nieVY Any Y Vsuitable hand/wheel 60 Ais ixred'io'rthe"V sha'ft1j5r7; By Vrotat'-` carriesY a'roller 15- at its outer endjadapted Yto,.be sup; v pod 1115011 the IlglmallY frfXed rail 2- The framefis t adjustable eye bolt 49, which is pivoted'on a pivot pin50. .Y adapted t0 bvpropelledfin the drireetonof the arrow The eietivedistance of the ro11er`44. from thepivorpin Y Shown inFigure Vl.` f Y Y Y t 50 may belvaried by removing the pivot'pill 59,13711d111f] Anradjusting memberzin the formjof a bolt16 is carf ing-the eye bolt Y49 with relation .to the;mer'r`1ber"48l Y l riedrrb'yamember 17-fixedtofthe'upstanding'members 11, w30:VY For example, this maybe Vne, iessitated byvar'iation's, f .'11 and hears against the inner end `of the stabilizingjbal' V:the size of the .rail with whichthefunit isused; i :Y asiat-18. i Y j i Y y Y' Y Y Y An adjusting setscrewfliscarriednbya framemember transversely extendingjmemberlvi engages thetframe j VSZ'on the-framemember 431.7'-Tl1e" setscrewf`51ha`^sVT ai Y.f'ele`1rnents10` The .memberI 21 is adjustably mountedwith! inner end portion 53;bearing against fthe" supporting mem respecttolftheinnel" V@11d YOf'rhz` stabilizing bti'A aS] 'by Y Aberlt.' rBy turning the se/t'screwfSl,'thefangular pjostio y means ofthe bolt 22, and limitstheY counterclockwisef i oftheroller-l'l-"with respect 'to-theepivot' pin'tl'may b fjrrotationV off'thestabilizingfbarfabogt"thejpivotlig/ as variedlV Itthe setscrewjSl is'rotated so'astolforce' the.' i

Yshownin Figure` 3. B-y"adjusting'rthek-members 116` and Y Vsupportinggm'embert in'ra cloc'kwisefdirecti; as Sel u. @272,jthe stabilizing bar'and frame maybe tiltedY with re-V in Figure 5 for'example, the machine? and the'lrollerY-Sws 7 lationftoroneY anotherran'drlthusY the drilling assembly may e0 will be moved Ytothe right.'Y Conversely, opposite adjust; 'iV Y i Y* be-tilted intoa'nd vout of;V a positionnormalgor perpenmerit 4of the setscrew 51 lwill allow'counterclockwiserotaf dicular tofthetrack.V Y .j i A Y VYjtio'n'of the supporting member `48and resultsinthe'mal {Any's'uitabley handle -19A may be fixed toethe outer chinetand roller 38 moving tothe left, Vasesleeniil Figureff fend/of the stabilizing bar"13 to enable the operator ofY 5. Thus the'operator may adjust-'the' position of the l-the machine to'r raiseV ar'zdlowerftheY outervr end, off the* machine laterally of theltrackerails"by'adjustingthe roller Y stabilizing b arlY .A toolbox 20 iscarried'rbygthe stabiliz-` 44: The adjustments'aregmade with ,directrelation'to2 f: Y ing 1liar 13 and servesnas' acounterweightf'to balancek the *t the rail 1, rather than the Vnorrriallyfixed rail 2" Y' Y' macine.Vv v fr f r In order to moye'theimachinel frgmthejtraclgrailmp, afp'air'of runfotwlieels'fZ; 2 5 fare'mounted on the 'left.-v V50 *Y hand sidefof the1 maehine,""as yseenfin"Figui-eli; TherY wheels 24 and-25far'e mounted-'on aY supporting structure v ,Y forrr'ieelby outwardly egtendingY fratrieV members 126; and g' g 27. The membersY 26 and 2,7 "are mounted for rotation ing the handwheel 60;Y thefoperator-of the -rnzr1chixlefmaya;` VVabout -an` axis 27' extending-*longitudinally ofY Ythe maV propel the machine along'tlietiackgrand have positvegconL chiile. A-pairpf locking elements; and `29garepivoted trol over the precisefrlon'gitulin'alpositiineOfthernach f tofafmember'SQeXtendingbetweenlthe supports'zgand .f j The drillingassernblyfincludes;afpairbftrotatablev s 27, 21S;l t 3,1` :3173,51 32# "Elchffthel locking elementslZS".Y ndrill spindle Ashafts16'1ta`i1d.62 adaptedtostraddletlieY j "endj2i9'thave'a-rstecess '32121111 zaatthe'ends @fthe 5 Vrail 1 and rotafefthe drin bits:ssjand164fartdriilingspikea Y Y members28 andl29`and asecondrcessjintermediatethe ..60 Yrece'ejivi'ngholes` in the supporting ,t'S-*O'f'the rffaCk- Each Y Y endsyasatj andfh l* 'Eaclgfflthes recesses isi-adapted i 'ofthe2 drill Yspindle shafts61 and 62irsV rotatably mountedi i' t9 1' lvel an* l-lljsit'fflrlrldiyl*gr 'lllgtttgirtellyeitendingy 17171@ inga thrust collar 65 and66, respectiyelyy slidablymount Vd Vbei 355 Whl the''ecesssg and 4v 32e`V are engaged 'wi in afthru'st Ybraeket@V 67'.V As1wi1l; be;-`seenY mosti clearlym `rFigure, .each of the'drill spindleshaftsjis .splneand y' engaged by a splinedmember"or'fshaft `68`iandg69i I Y @eredita-tiembre' rotatably fr mounted in VYthefupper en d Y portionfoffhousings and-25 Willjdropsztorthejlower positionfshownlin; dotted 70 `tively. Each'clarn'p'lis adjustablymollntedon support-( outlineinl-igure Siif'At; p qSi'fiQn/fhe jpcesssg34vandff j ing bar 74'. Each of theclamps72'fand Bare-illustrated 'i 34a611gage1the projection.SSQancl'hold thewheels in their VVin the form of blockshayingslots communicatinggwithf lpwer'roperative position Atthis lower'@position; the the openings which receive'the'rhousingsjlland 71 andthe wheelsaredisposedrclosely djacent'toorfiortactwith."' -supporting bar.The housingsandfll'andthesupport barl `74 are secured in their*A s'ired relative Y'position essere the-tightening bolts 72a, 72b, 73a'and 73b respectively associated with the clamps.

The opposite end portions of the supporting bar 74 are formed with slots 75 and 76. The supporting bar 74 rests upon longitudinally extending frame members 77 and 78, each of these members having generally longitudinally extending slots 79 and 80 respectively formed therein. Any suitable securing means, such as the bolt and nut 81, is passed through the slots 75 and 79. A similar securing means 82 is provided for the slots 76 and 80. By loosening the securing means, the supporting bars 74 may be moved to a wide variety of selected positions transversely of the rail 1 and secured with relation to the rail 1 and frame members 77 and 78. Furthermore, when the securing means are loosened, the supporting bar 74 may be moved axially to accommodate the drill bits 63 and 64 to any selected set of diagonally opposed holes in the tie plates 3.

Each of the spindle housing, spindle, drill bit and adapter assemblies are identical and for this reason only the assembly, including the housing 70 will be described. In Figure 8, for example, the lower portion of the spindle shaft 61 is rotatably mounted in bearings 83 and 84 carried by a sleeve 85 slidably mounted in the interior of the housing 70.

The lower portion 86 of the spindle shaft has a collar 87 slidably mounted thereon and biased to a normal lower position, as shown in Figure 8, by a spring 88. The lower portion of the spindle shaft has a bore 89 adapted to receive a drill bit adapter 90. The upper portion of the bore 89 terminates in a non-circular recess 91 conforming generally to the conguration of the tang 92 of an adapter shown in Figure l5. The collar 87 includes a second bore 93 at the lower portion thereof substantially larger than the diameter of the lower end portion of the shaft. A recess 94 is formed in the lower portion of the shaft and an adapter retaining ball 95 is seated in this recess. Whenever the collar 87 is raised to its uppermost position as shown inFigure 8, the enlarged bore 93 of the collar is generally aligned with the ball and the ball can move outwardly with respect to the shaft. When the collar is released, the spring S8 forces the collar 87 downwardly, and the collar forces the ball inwardly so as to force a portion of the ball into the bore in the spindle.

The tool box is adapted to carry a plurality of adapters and drill bits to enable the operator of the ma chine to quickly change from one drill bit to another, as the occasion may require. For example, a member 97 may be provided in the tool box to hold a plurality of drill bits and a member 98 may be provided to hold a plurality of adapters for the drill bits. Each adapter 90 is generally elongated and includes a recessed portion 99 in the shank thereof adapted to receive the locking ball 95, when the shank is inserted into the lower end of the spindle shaft. A generally hexagonal portion 100 is formed on each adapter and is spaced from the tank 92 of the adapter in such a way as to be adjacent the lowery end of the shaft when the tang 92 is received in the portion 91. Each adapter includes at its other end a gen-V erally elongated bore 101 adapted to receive the shank of a twist drill bit. The end portion of the adapter is tapered threaded, as at 102, and this end of the adapter is provided with' longitudinally extending slots 103 cut through the wall of the adapter. A nut 104 which is internally pipe threaded or provided with internal tapered threads, is received by the threads 102. When a drill bit is inserted in the bore 101, the nut 104 is turned and the shank of the drill bit is tightly gripped by the adapter,

the walls of the adapter bore being forced inwardly to effect the gripping action.

In order to insure that each assembled adapter and ldrill bit are of uniform length, the tool box is provided with a gauging device. The device includes a pair of upstanding positioning members 105 and 106 spaced apart on theorder of the desired length oftheassemble'd.

adapter and drill bit. An intermediate upstanding adapter guide member 107 is spaced from the member 105 a distanceof the order of the distance of the tang to the hexagonal portion 100. The member 107 is cut away as will be seen in Figure 16 to conform to the shape of the hexagonal portion 100. A drill bit guide 108 is positioned intermediate the members 107 and 106 and serves to support the drill bit. Whenever the operator desires to change the drill bits, he simply places an adapter member from the tool box 20 into the position shown in Figure l5, A new drill bit is inserted in the bore 101 in the adapter and the assembled length of the adapter and drill bit are adjusted until the overall length conforms to the distance between the members and 106. l`he drill bit 109 may be moved inwardly or outwardly with relation to the adapter by merely sliding the drill bit or the adapter or both along the guide recesses in the members 107 and 10S. When properly positioned, the nut 104 is tightened. The` member 107 prevents rotation of the adapter during the tightening process.

When the operator has assembled the bit and adapter, he merely slips the tang 92 of the adapter intol the bore 89 of the shaft and moves the collar$7 to its uppermost position shown in Figure 8. The adapter moves into the bore of the shaft until the tang 92 is received in the portion 91. the spring 8S forces the collar to its lowermost position where it forces the ball 95 into engagement with the recess 99, thus holding the adapter against displacement with relation to the shaft.

.Each of the rotatable members 68 and 69 has a sprocket 110 and 111 respectively, aliixed thereto. Each sprocket 110 and 111 is driven by a chain 112 (Figure 7), whichl is engaged by a sprocket 113 fixed to an upstanding shaft 114 rotatably supported by any suitable bearing assemblies 115 and 116 on frame members 117 and 118 respectively. An idler sprocket 119 is rotatably mounted upon a lever 120 pivoted to the frame. A spring 121 has one end portion xed to the member 120 and another end portion adjustably fixed with respect to the frame and serves to bias the idler sprocket 119 into engagement withv the chain 112, thereby taking up any slack in the chain 112.

a driving pulley 124 on a shaft 125 of the prime mover and about the pulley 122. A pair of direction changing idler pulleys 126 and 127 are mounted on the frame to engage the belt 112.

Each of the idler pulleys 126 and 127 has a generally' plane of the pulley 122. The idler pulley 127 has itsaxisinclined slightly to the vertical, as will be seen in Figure ll, and imparts a slight twist to the other strand as the strand passes in contact with the surface of the pulley 127.

A flywheel 129 is 'keyed to the shaft 114 and serves to store inertia delivered to the shaft 114 by the motor 12.

The actual drilling time is Abut a small portion of the total running time of the motor 12 and the energy stored in the ilywheel serves to maintain the speed of the drills relatively high during the drilling thrust. l

.A stabilizing shaft 130 has an upper end portion xed to the thrust bracket 67. The shaft 130 is received in a sleeve 131 positioned in general parallelism with the housings i0 and 71. The lower end of the sleeve 131 is received by a clamping block 132, which is secured to the supporting bar 74. The clamping block 132 is similar in structural detail to the clamps 72 and 73. The

stabilizing shaft 130, sleeve 131, thrust bracket 67, housingsu70 and 71 and supporting bar 74 form a The operator then releases the collar 87 and- 'pfevieezp'frl enabling: the operator` or.' the machine te Yzrgenerally'elongate@lever 156 extends generally' parallel-V t'r`ek andha's'V a handle portion" V137V extending#V Y rarlai'dlyoff the machineandpositioned generally above the-ro'llrsfs and 2li?. Lever? is pivotfedinte'rmediatef 'j Whichl'is' adjpstbly? secured- ,a't"on'e" end Vthereof toV a tion spindles Gli-arid? eigenem Y the Voperatorv may' rn'o'vethe assembly tol tHe new; position 'Ythe"spring-Mjretilrns the handley and drills to an upper Vneutralposition-'spaced a: small-distance upwardly from The thrust brackt'67 has.V a stop rody 122W'V pivotedV theret'oasat 148;:- 'lhe stop r'od Y147Y has a normal posi-V The projec the? tie'E platesz 3. This positioningv facilitates the lo'ngi-V Y Vtudinal alignment of the drills Withthe spike holes; Since tlieftipsofl the drills are quite close to Vthe tie plates in 2- Y' tlie'ir'or'ma'l orneutralpo'sitiongit iscomparatively ea'sy tfaylig'n Lthe drill-,by merely sighting along the rail. K K Y seeoildprojectin; Whichin Ythis instance is'shown as e hidenr'esftgmovefh anusfrpm theirfnermarposition.

indicated at `156 in Figure; 1,3. u

'tlief'machinej ispositioned' forfdrilling the anchor spike Y Y' Y'B3/f; turning the Yhand" ieseellsafnenrl veterinaripsitmifeor@pienil the stabilizmg 1n-: engageY een '15u' einer. The; fiera-mrleedA Y ou: ont timmermanposition whatzg form ofi myY machine;Vv Il Wish` itto 'be understood'that'* Y tlii'slvshovl/ing*isfI tobe faken in'i anV illustrativeIordiagramifr matiosenseV only There-are* many modcatiorisof my invention which Vwill, be= apparent lto thosejskilled infy tlie'f artTl andivvhich areallwithin the scope of the?inventiomV Y only' as"V the hereinafter appended; claims. Y Y Y The use and operation ofmyinvention areai Y' The machine maybe vvheeled into anyrdesred .posi Vtio'ri'lal'ongfa `tracl'ly* means` of the" wheelsf24' and The" machinej isV then `p'o'sitioued'L on-'the rails asf shown?! in Figire'l. The drills 65 andi 64' rnayjbe; adjustedi fony drilling theghol'esfor the rail: spikesfjndicated -at 1551; in`Figure l3or the'more'widely spaced anchor:spikelioles*.V

AsY shownin 'Figure' V32"* The 'sopeof the invention; thereforeysholdbe limited of'ftheties maybeL compensated byV means'L of' s position'forv the drilling operation, the operator sinp grgas'p'si'tnehandlepmjon Yi37ganc1, therhangi w'hj'ee'lrtt); `j Wheel fgthe'fL machine 'is" nio'vd along tlie'ails from'onetie' pla'tto the" other; 'fl`he` operator, vWhile sighting along the-V .railiV I Vplon'gitdinlly;

Y Y ftlre'drill'sv intarnpth'e` ties? When'the drills reach the" lovverl'imi'tsfof'- theirV movement, they operator 'reliefve'sthe handle on'tle downward thrust and' theV spring; ret-.rmsV the* 'drills' to their' i anfangl' baril 151i, V,is-positioned above the Yprojection 150,.` Y

Y' TheV abutment 1491has Va cut-away portion 1552't'o thereby for'r'ne'a'V fledgefl' venga'scgeable withV the upper surface of-{the'rl'gle bar'l''i. `Whenever it isVV desired to raise ,thedrillingassemhlyto a position sufficiently high tot jcleara'lV switch-,- crossing obstruction, the operator simplyYYY rdtat'esithe'stoprod 147 o'utofengagernent with the profV upper;position;V The operator thenrotate'sf' theliand'wleel Gl'andjmoves Ythe'Vrr'iachine' to .thene'xt tie'-plat'effrforfthe''p,Y nextdrillingoperati'on;'Both'the'-hand' Wheel 60' and" .the control'handlel of the drills :arepositio'ne'd to beV 1Yconveniently*manipulated by the' operator as hefwallicsf, n

alongY and' si'g'htsalong' Vtherfail 1. ltdesired,"theoperf'V vavtor may push the' machinerfr'omfone positionto''theV r neit and rely' on' the hand' Wheel`-60 for any small adi Yjl'lstments longitudinally of the rail; vDuringvthe drilling f Y operation', theoperator need'sight or` spot' only-one holeV Y Vonlyilongituclin'ally. of thefrail, the'rlater'al' psitionofrthef YYpos'itioningjof thedrills,"

spike;holesb'engspotted automatically bythefpres'elec'ted f;

lt ithe operatorY desiresito Y Y y .drill strom` thean'hor spik'ej li'ole drilling' position to theV f rail 'spikedrilling' position, Vit.s!compa'rative'lyleasyindV Y simple t`o Vadjus'tfthe hou'sing'sg'r'll) and! 771 inwardly oronfvvardly, asth'e'cas'e'mayhe',,withrespectlto'the VsupgA Y. porting bar' VThesrpj'orting.bar Q4 itself may beiV Y' moved-.axially', in 'case it is desired tol drillY Ythe oppositelyf disposed raill spike holes ISSLYThe drills may befsvvnngj' Y axiallyY with respectto therailinorder to permitldrilling,Y Y

. The `upper surface oftliejprojection lilsis inclinedas e "aclo wise direction out-of: engagement Vwith the' anglefY lfandvforceis thednlling assemblyi downwardly to' l* intl Wherlevvth'e YAalautfrnent :149 may engage' lthe projec; y

' A at?" Whenever itisdesired to 'retnrnthe drilling v Vasse'nlblytto the"nonnalpositiongi the Y operator grasps I thjeupperportionoi the stop'redl'll andvsrwings litinj Y regime drill; bi'tfieaf 'pis relas'edfrom; the. adapte ne\y 'drillL bit may thenibe` positioned in; the"V borre'fofV Y 1. adapterf'and'gaug'efd to' thel proper clir'n'ens'iorjrlyaneaY ,Y Whenever it is desiredftofreplaee afwornfdrill'v'ritl newdrill' or-a freshly' sharpened drillthe opeiat'o'r'simplyVY 1 from within Ythe spindleshaft 85; `By looseningktli'e 'iili' i change` the groskitirdir;'offrire 9 drill bit are then reinserted in the lower end of the spindle shaft.

When the machine reaches an obstruction in the track, such as a switch or the like, the operator simply pulls inwardly on the upper end of the stop rod 147 and the drills are then raised to the upper extended position where the abutment 149 is positioned above the angle bar 151. The drilling assembly is then allowed to descend to a position where the ledge 153 of the abutment engages the angle bar 151. After clearing the obstruction, the operator simply releases the stop rod by again pulling inwardly on the upper portion of the stop rod sumciently to release the ledge 153 on the angle bar 151 and the drilling assembly descends to its normal position.

When the drilling operations along the rail are linished, the locking elements for the wheels 24 and 25 are released and the wheels are allowed to descend into their lower position where the locking elements are again engaged. The operator of the machine may then grasp the handle 19 and tilt the machine about the axis of the wheels to a position where the roller assemblies 8 clear the rail. The machine may be wheeled from the track and may be rolled on to any carrying vehicle for the machine.

Whereas, no particular size of drill is critical, I find it advantageous 4to employ drills having a diameter somewhat less than the size of the rail spike.

Iclaim:

l. A tie drilling machine adapted to drill spike holes for a track rail positioned to gauge, including a frame movable along said rail and having supporting engagement with the other rail of a track, a reciprocal drilling assembly adapted to drill spike holes in said tie adjacent said positioned rail, means for adjusting said frame in a lateral direction to a xed lateral position with respect to said track, said frame including means for tilting said frame and said drilling assembly relative to said track to insure reciprocation of said drilling assembly in a direction normal to the plane of the rails of said track.

2. A tie drilling machine for drilling holes in the railsupporting ties of a track including a frame adapted for movement along said track, a drill spindle assembly mounted on said frame for vertical movement with respect to one rail of said track, said frame having a pair of wheels adapted for engagement with said one rail, a supporting roller extending from said frame and adapted for rolling contact with the other rail of said track, and an adjustable roller mounted on said frame for engagement with one side of said rst-named rail, adjustment of said roller being elective to shift the said frame laterally of said track to thereby eiect adjustment of said drill spindle assembly with relation to said track.

3. A tie drilling machine for drilling holes in the railsupporting ties of a track including a frame adapted for movement along said track7 a drill spindle assembly mounted on said frame for vertical movement with respect to one rail of said track, a pair of wheels on said frame adapted for engagement with said rail, a supporting roller extending from said frame and adapted for rolling contact with the other rail of said track, and an adjustable roller mounted on said frame for engagement with one side of said first-named rail, adjustment of said roller being eiective to shift said frame laterally of said track to thereby eilect adjustment of said drill spindle assembly with relation to said track, and handactuable means for rotating at least one of said anged wheels to thereby propel said frame along said track.

4. A tie drilling machine adapted for simultaneous drilling of holes in a rail-supporting tie on opposite sides of a track rail including a wheel frame adapted for propulsion along the rails of a track, a pair of drill spindles mounted for vertical reciprocation with respect to one rail of a track, said spindles being spaced to straddle said one rail therebetween, means for simultaneously depressing said spindles, a guide structure for said spindles, said guide structure being adjustably mounted on said frame for movement in a lateral direction with respect to said frame and movement in a longitudinal direction with respect to said frame, and means for holding said guide structure at a fixed position with respect to said frame.

5. A drill bit and adapter gauging structure including a support having a pair of upstanding positioning members spaced from one another a distance equal to the desired assembled length of an adapter and drill bit, an upstanding guide member intermediate said iirst-named upstanding members and having a recessed portion adapted for reception of an adapter, Isaid support having a second upstanding guide member with a recessed portion adapted to receive a drill bit, said recessed portions and said positioning members being generally aligned thereby to allow relative sliding movement of a drill bit and adapter between said positioning members.

6. The structure of claim 5 characterized by and including a generally hexagonal recessed portion on said rst-named guide member.

7. A drill bit and spindle assembly including a generally elongated spindle, a support, said spindle being rotatably mounted in said support, and having an end portion provided with a bore formed and adapted for thereception of an adapter, an adapter received within said bore and a drill bit carried by said adapter, said drill spindle having a locking element mounted for movement into and out of said bore, said adapter having a recessed portion for receiving said locking element, a collar slidably mounted on said spindle and adapted in one position thereof to engage `said locking element thereby to force said locking element into engagement with said recess, and resilient means for forcing said collar into engagement with said locking element.

8. The structure of claim 7 characterized by and including stop means for limiting the movement of said collar with relation to said spindle.

9. The structure of claim 7 characterized by and including a reduced noncircular portion on said adapter engageable with a reduced noncircular portion of the bore within said spindle thereby to prevent relative rotation between said spindle and said adapter.

References Cited in the le of this patent UNITED STATES PATENTS 105,984 Sanford Aug. 2, 1870 238,079 Beaumont Feb. 22, 1881 301,978 Fretel July 15, 1884 608,110 Dunlop July 26, 1898 911,639 Andrew Feb. 9, 1909 915,184 Kevin Mar. 16, 1909 1,060,173 Edwards Apr. 29, 1913 1,098,751 Newton June 2, 1914 1,186,173 Dixon June 6, 1916 1,323,967 Dickinson Dec. 2, 1919 1,449,361 Wink Mar. 20, 1923 1,978,513 Talborys Oct. 30, 1934 1,995,168 Bronander Mar. 19, 1935 2,207,883 Woolery July 16, 1940 2,354,095 Adams July 18, 1944 2,380,049 Jones July 10, 1945 2,410,508 Lamme Nov. 5, 1946 2,487,572 McKee Nov. 8, 1949 

